people you should stop making differences between 'mabasa' and 'mabaso' thesea re same surnames..whether its in swazis or zulus or shangaan it does nt matter.
what constiuted to the difference is migration to different areas. i keep telling people but they seem confused. ask yourself as to why these surnames are only found in the (nguni) section./but not in e.g's tswanas, vendas, sothos, etc. interesting!